That's a good point. Still, the use of a fixed parabolic reflector dish involves aiming it at something, which would ordinarily be a point in the sky where ther

That's a good point. Still, the use of a fixed parabolic reflector dish involves aiming it at something, which would ordinarily be a point in the sky where there is a particular satellite, hence a geostationary orbit. For other applications where the satellite move around, I wouldn't expect the antenna to be a parabolic dish. It looks like Starlink's isn't, although their original one is more curved than I'd have expected. Maybe I'll modify this advice in the future and say "the curved satellite dishes that aim at a point in the sky are pointing south".